Cab switch for locomotives and the like



April 21, 1931. w D E ET AL 1,801,624

CAB SWITCH FOR LOCOMOTIVES AND THE LIKE Filed Oct. 3, 1928 s Sheets-Sheet 1 ATTORNEYS I April 21, 1931.

c. W.DAKE ETAL 1,801,624

OAB' SWITCH FOR LOCOMOTIVES AND THE LIKE Filed Oct. 3, 1928 3 Sheets-Sheet 2 ATTOR N EYS 3 Sheets-Sheet 3 April 21, 1931. c. w. DAKE E1 AL CAB SWITCH FOR LOCOMOTIVES AND THE LIKE Filed Oct. 3, 1928 Inventor; C/rar/e; Mia/? ZflziZz'a i'n J. Mal/e B f ATTORNEYS mama Apr. 21, 1931 UNITED STATES PATENT OFFICE CHARLES w. DARE AND WILLIAM A. mu, CHICAGO, ILLINOIS, ASSIGNOBS '.|.O THE mE-NATIONAL COMPANY, 01' CHICAGO, ILLINOIS, A CORPORATION 01 NEW CA3 SWITCH I'OB LOCOMOTIVIS AND THE LIKE Application fled October 8, 1928. Serial No. 309,888.

." a in the hand operated members. are easily accessible and the electric controlling members are adequately protected.

The invention is illustrated more or less diagrammatically u drawings wherein:

Figure 1 is a side elevation;

Figure 2 is a front view;

Figure 3 is a bottom lan view;

Figure 4 is a view wit the cover removed;

in the accompanying Q Figure 5 is a detaihof the switch blades and conducting members up-side-down; Figure 6 is a section along the line 6-6 of Figure 2; Figure 7 is a detail of the switch connecu tions; and

Figure 8 is a detail of one of the hand control members.

Like parts are indicated by like characters throughout the specification and drawings. a A is a housin or box, closed at the bottom and provided with the flanges A perforated at A whereby the housin or box may be bolted or fastened in p ace. Associated with these flan es at their upper ends are sleeves A in w ich engage the conduits A through which the electric wires are brought to the interior of the housing.

A is a cover, grooved as indicated at A, the groove containing a flexible packing asket A to enga e the walls of the housln the cover being old in place by the screws 1% to make an inclosed, dust and oil-tight box.

B is a uadrant on the outer face of the cover A aving a plurality of latch apertures B and stop lugs B, one at each end of the quadrant. B is a switch handle mounted on the spindle B, which spindle is rotatable in the hub B in the center of the cover. B is a spring-pressed latch upon 0 thequadrant B whereby the angular excursion of the switch handle is limited by the stop blocks and may be locked in intermediate positions by engagement between the tending downwardly from the lower end of the spindle B is a drive plate B from which project conical fingers B, which fingers, when the handle B is rotated, operate the switch, as will hereinafter appear. 7

\ C is an insulating block. It is held in place in the housing by the three holding screws 0 Arranged about the periphery of this insulating block 0 are a plurahty of perforations (3, each terminating in a pocket on the underside of the block G, which pockets are all closed by the single late G. Each of these perforations or poc ets contains a binding post screw C projecting upwardly from the insulating block into the area of the housing. There are, as indicated in Figure 7, seven of them and each one is Identical except that it makes an electrical connection for different purposes.

0 is-a hub recessed in the insulating block C and provided with two angularly spaced conductor arms O, each one of them associated with one of the binding posts or screws C. This hub carries a pivot pin 0 on which is rotatably mounted the two discs C hav ng each a pair of diametrically opposed s ring contact fingers G. Supported on 1: ese plates C is an insulating drive disc C-f, the disc and plates being connected by a pair of pins C The drive disc G has two diametrically o posed apertures containing bearing sleeves 6 ada ted to engage the pins B wherebv rotation of the handle B causes rotation o the spring clip switches C.

It will be noted that a conductor D is in electric circuit with one of the fingers C to energize the contact fingers C.

It will be noted that the three spaced contact fingers E, E, E are each provided with binding posts to which a conductor leads so that rotation of the handle B closes the circuit through some one of the fingers E, E, E, but it will be noticed also that the angular arrangement of these fingers is such that the spring fingers G can never touch more than one of the contacts E, E, E at a time.

stop B and the ports in the quadrant. Ex-

but far enough out not to be-interferredv with by the spring contact members C, are

two upwardly extended contact springs F in opposition one to another, and each of them in circuit with a conductor as indicated. F is a switch having two irregularly shaped insulating blocks F and a single conductor block F, the relation of the parts being such that when in one rotated position the insulating blocks spread the fingers F, F apart and when in another position the insulating blocks are out of register and the sleeve F dorms an electric circuit between them. It will be noted that the pin F is slidable in a boss F in the wall of the housing, a spring F being provided tending to hold the pin inwardly to cause interlocking between the notch F upon the boss F and a lock F on the handle F The handle may be pulled back, compressing the spring to permit rotation, thereby providing a positive engagement and disengagement of the switch.

If it is desired to make electric contacts with the interior of the housing and with the switches therein other than through the conduits A, binding posts G, G are provided, set into the wall of the housing so'that if wires are brought to these binding posts and as wires are taken from them to a more suitable part of the switch interior, circuits may be closed, just as through the conduits themselves.

We claim:

1. In combination a switch housing and cover, a control handle on the outside of the I cover, a fork on the inside ada ted to rotate with the control handle, a switc member, an insulated actuating plate having perforations adapted to be engaged by the fork whereby rotation of the fork causes rotation of the switch and whereby removal of the cover automatically plate.

v 2. In anelectric switch, a recessed insulated base, a supporting hub in said recess, a pluralit' of inclined radial arms extending outwar y from the hub to the periphery of the plate, a pivot pin carried by the hub and a rotatlng switch member mounted on said pivot pin. 7

3. In an electric switch, a recessed insulated base, a supporting hub in said recess, a pluthe cover, the plate bein disengages the fork and the 4. In combination, a switch housing and cover, a control handle on the outside-of the cover, a fork on the inside ada ted to rotate with the control handle, a switc member, an

insulated actuating plate located in a plane perpendicular to the axis of rotation of the switch member overlying the switch member, pro ect1ng beyond it and shielding it from D perforated, the perforatlons being adapts to'be engaged by the fork in the handle whereby movement of the handle causing rotation of the forkrotates the switch. a

Signed at Chicago, county of Cook and State of. Illinois, the 15th day of September,

CHARLES W. DAKE.

IAM A. WULLE.

rality of inclined radial arms extending outwardly from the hub to the periphery of the base, a pivot pin carried by the hub and a ot pin, a rotating switch member comprising a pair of spaced parallel switch discs,

spring fingers projecting from the periphery of said discs in oppose pairs, an insulated actuating plate, a plurality of pins spacing the plate from the switch discs, the plate being perforate, an actuating fork having;

, fingers adapted to penetrate the perforations.

ioo 

